Annex I Units of Measure: Code elements listed by quantities - UNECE

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Codes for Units of Measure used in International Trade Units of Measure: Code elements listed by quantities Quantity Level Cat. Use Id. Name Conversion factors to SI units (1 unit equals) Represen. Symbol Cross ref. amount of substance 1 mole mol 619 1S kilomole kmol 620 1S millimole mmol 621 1S micromole µmol 622 Avogadro constant 1 reciprocal mole mol -¹ 623 molar mass 1 kilogram per mole kg/mol 624 1S gram per mole g/mol 625 molar volume 1 cubic metre per mole m ³ /mol 626 molar thermodynamic energy 1S cubic decimetre per mole 1 dm 3 /mol dm ³ /mol 627 1S cubic centimetre per mole cm ³ /mol 628 1M litre per mole 1 dm 3 /mol l/mol 629 1 joule per mole J/mol 630 1S kilojoule per mole kJ/mol 631 chemical potential 1 joule per mole J/mol 632 absolute activity 1 one 1 633 affinity (of a chemical reaction) standard equilibrium constant 1 joule per mole J/mol 634 1 one 1 635 molar heat capacity 1 joule per mole kelvin J/(mol . K) 636 molar entropy molar gas constant volumic number of molecules (or particles), number density of molecules (or particles) molecular concentration of B volumic mass, mass density, density 1 reciprocal cubic metre m-³ 639 1 kilogram per cubic metre kg/m ³ 642 mass concentration of B 1 kilogram per litre kg/l or kg/L 643 concentration of B, 1 mole per cubic metre mol/m ³ 644 amount of substance, 1 mole per litre 1 mol/dm 3 mol/l 645 concentration of B 1S mole per cubic decimetre mol/dm ³ 646 1S kilomole per cubic metre kmol/m ³ 647 volume fraction of B 1 one 1 648 mole fraction of B 1 one 1 649 mole ratio of solute B molality of solute B 1 mole per kilogram mol/kg 651 ionic strength 1S millimole per kilogram mmol/kg 652 degree of dissociation 1 one 1 653 partial pressure of B (in a gaseous mixture) 1 pascal Pa 654 166 Recommendation 20
Codes for Units of Measure used in International Trade Units of Measure: Code elements listed by quantities Quantity Level Cat. Use Id. Name Conversion factors to SI units (1 unit equals) Represen. Symbol Cross ref. fugacity of B (in a gaseous mixture) osmotic pressure standard absolute activity of B (in a gaseous mixture) activity coefficient of B (in a liquid as a solid mixture) standard absolute activity of B (in a liquid or a solid mixture) activity of solute B, relative activity of solute B (especially in a dilute liquid solution) activity coefficient of solute B (especially in a dilute solution) 1 one 1 657 1 one 1 658 1 one 1 660 1 one 1 661 standard absolute activity of solute B (especially in a dilute solution) activity of solvent A, relative activity of solvent A (especially in a dilute solution) osmotic coefficient of the solvent A (especially in a dilute solution) standard absolute activity of solvent A (especially in a dilute solution) stoichiometric number of B 1 one 1 663 1 one 1 666 mass of molecule 1 kilogram kg 667 electric dipole moment of molecule electric polarizability of a molecule 1 unified atomic mass unit 1,660 540 2 x 10 -27 kg u 668 1 coulomb metre C . m 669 1 coulomb metre squared per volt C . m ² /V 670 Recommendation 20 167
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Annex I Units of Measure: Code elements listed by quantities - UNECE

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